CN105832356A - Radiography imaging parameter selection based on extant patient information - Google Patents
Radiography imaging parameter selection based on extant patient information Download PDFInfo
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
- G16H30/20—ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/545—Control of apparatus or devices for radiation diagnosis involving automatic set-up of acquisition parameters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
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- A—HUMAN NECESSITIES
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- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H10/00—ICT specially adapted for the handling or processing of patient-related medical or healthcare data
- G16H10/60—ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
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- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1061—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using an x-ray imaging system having a separate imaging source
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Abstract
System and method for automatic radiography imaging parameter generation by use of extant patient information. The patient information is categorized, and one or more radiography imaging parameters of a radiographic device are selected and processed according to a knowledge-based model applied to a selection of at least one patient information category. A value for the selected imaging parameter(s) is output. Values for several imaging parameters may be automatically generated according to the processing and optimization. Alternatively, a value, or a range of values, may be suggested for presentation to a clinician. The processing and optimization of the radiography imaging parameters may be based on a subset of the patient information.
Description
Technical field
Embodiment of the disclosure and relate generally to imaging device, and relate more particularly to lonizing radiation
Photograph imaging device.
Background technology
Radiotherapy (RT) is that the one for treatment of cancer is universal and efficient method, wherein
The radiation of ionizing is used for intention and kills malignant cell or slow down its growth.RT is usual
Combine with surgical operation, chemotherapy or hormone therapy but it also may be used as primary treatment pattern.
Radiotherapy can be managed as internal RT or close-range treatment, or the most common outside is penetrated
Bundle RT.
Internal RT treatment generally includes by one or more radioactive sources permanently or temporarily
It is placed near the area for treatment specified.On the contrary, external beam RT is usually directed to by being positioned at
Beam of radiation produced by the source outside relative to patient or radiation object guides extremely is rolled over by slight illness
The area for treatment of mill.Beam can include photon, electronics, proton or other heavy ions；Photon
(at present) is the most frequently used particle types.The ionizing that malignant cell is used during RT
Radiation destroys.But, the destruction from radiation is not limited to malignant cell, and therefore, manages
The dosage of the radiation to the health tissues beyond treatment volume (volume) is minimized with thinking with
Those tissues are avoided to be destroyed similarly.
The purpose of tradition RT therapy planning method is to design to target volume generation as far as possible
The therapeutic scheme of uniform metering distribution, and make the dosage outside this volume minimize.Generally,
Such as X-ray equipment, computerized tomography image (CT), cone beam computed tomography image (CBCT)
Or the imaging device of NMR (Nuclear Magnetic Resonance)-imaging (MRI) equipment etc is used for generating one or more
The image in preliminary sweep or region interested (such as, in advance treatment plan image).Generally
Ground, once has been achieved for image, exposes key structure (such as, district in the target area
Territory or organ) identified especially, so that treatment can guide optimisedly.
Generally, before next-door neighbour's treatment session (session), but in treatment plan imaging session
Afterwards, by imaging patients to confirm that patient positions and provide the region interested for treatment
The checking of position.By the dose distribution calculated in the treatment plan stage and the agent being delivered to patient
Amount distribution between minimum deviation successful radiotherapy it is critical that.Especially,
It is integrated with patient location that the CBCT of radiographic apparatus can be used in IGRT and tests
Card, particularly before next-door neighbour's radiotherapy session.
Normally, the essential experience and knowledge based on practitioner to particular patient history of practitioner
Select suitable source dates (such as, source voltage and current, scan track) and image capturing
Parameter (such as, frame rate, dynamic gain).Although make use of the Professional knowledge of people, but this
The method of sample is also easy to occur mistake, inconsistent between different practitioners, and
Can not utilize about the whole available information of this patient.
Summary of the invention
For the position fixing process of patient, imager source is set (such as, radiographic apparatus
Set) and image capturing set be optimized ideally, in order to both obtained high-quality image
The radiological dose of patient will be minimized the most simultaneously.Therefore, embodiment of the disclosure that use is existing
The patient that such as obtains from treatment plan CT scan in advance of the specific information of patient become
As such as to use kV/MV x-ray imaging system before next-door neighbour's radiotherapy
Automatically generate and wait to be used for one or more imaging parameters of imaging patients.
Thering is provided this summary of the invention to introduce the selection to concept with reduced form, it is the most concrete
Embodiment further describes.This summary of the invention is not intended as identifying theme required for protection
Key feature or key character, be not intended to the scope being used for limiting theme required for protection.
According to embodiment of the disclosure, it is provided that a kind of for by using existing patient information
Automatic radiograph imaging parameters generate system and method.Patient information is classified, and
And the Knowledge based engineering model of at least one patient information categorizing selection is selected according to being applied to
Select and process one or more radiograph imaging parameters of radiographic apparatus.Output pin
Value to selected (multiple) imaging parameters.Can automatically generate according to processing and optimizing
Value for some imaging parameters.It is alternatively possible to the scope of value, value is presented to face by suggestion
Bed doctor.Process and the optimization of radiograph imaging parameters can subsets based on patient information.
More specifically, an aspect of this disclosure includes a kind of for generating for patient's
The method of one or more parameters of radiographic image.The method includes receiving and for trouble
The step of the patient information that the radiographic image of person is relevant.Based on the patient information received
Determine at least one imaging class.One or more base is selected from some Knowledge based engineering models
In the model of knowledge, make this selection according to imaging class.Join from some radiographic imagings
Number selects one or more radiographic imaging parameters, makes this selection according to imaging class.
According to the radiographic imaging parameters selected by one or more Knowledge based engineering models treated,
For the radiographic imaging parameters selected by optimization, and the imaging ginseng selected by generation
The value of number is as output.
Above-mentioned for summary of the invention, and the most necessarily comprise the simplification to details, summarize and omit；
Therefore, artisan will appreciate that this summary of the invention is only illustrative and is not purport
The most determinate.As the other aspects of the present invention being limited only by the appended claims,
The indefiniteness specific embodiment that inventive feature and advantage will be illustrated below becomes
Clear.
Accompanying drawing explanation
The accompanying drawing of the part being incorporated in and form this specification illustrates the enforcement of the present invention
Example, and together with describing for the principle of the present invention is explained.
Fig. 1 describes the exemplary radiation therapy system according to disclosure embodiment.
The radiographic imaging parameters that illustrates that Fig. 2 describes according to disclosure embodiment generates system
The functional block diagram of the exemplary configuration of system.
Fig. 3 describe according to disclosure embodiment for generate for radiographic imaging device
The flow chart of method of imaging parameters.
Fig. 4 describe according to disclosure embodiment include optionally to the subset of patient data and/
Or to the consideration that Knowledge based engineering model manually selects, for generate for radiographic
The flow chart of the method for the imaging parameters of imaging device.
Fig. 5 describes the exemplary computing environments according to disclosure embodiment.
Specific embodiment
With reference to some embodiments.Although theme will be described in conjunction with alternative, but
It should be appreciated that they are not intended as theme required for protection is defined in these embodiments.
On the contrary, theme required for protection is intended to alternative, amendment and equivalent, and it is permissible
Be included in the theme required for protection limited such as appended claims spirit and
In the range of.
Additionally, in being discussed in more detail below, illustrate multiple specific detail to provide required
Comprehensive understanding of the theme of protection.But, it will be appreciated by the person skilled in the art that permissible
Embodiment is put into practice in the case of there is no these specific detail or its equivalent.At other examples
In, it is not described in known method, process and parts, in order to will not unnecessary topotype
Stick with paste aspect and the feature of theme.
Present and discuss the part of following specific embodiment for a kind of method.Although herein
Accompanying drawing in disclose step and order, but these steps of the method describing the method operation
It is exemplary with order.Embodiment is very suitable for performing other steps various or at this paper accompanying drawing
Flow chart in the deformation of described step, and to be different from depicted herein or statement
Order.
Can be stored on some form of computer usable medium (such as program module)
Leading to of the computer executable instructions performed by one or more computers or other calculating equipment
Use and described herein embodiment is discussed below.Generally, program module include routine,
Program, object, parts, data structure etc., it performs particular task or implements specific abstract number
According to type.In various embodiments, the function of program module can be combined as required or divide
Cloth.
By example but non-exclusive manner, computer usable medium can include Computer Storage
Medium and communication media.Computer-readable storage medium include for such as computer-readable instruction,
Any means of the storage of the information of data structure, program module or other data etc and technology
Implement volatibility and non-volatile, deletable and unsuppressible medium.Computer
Storage medium includes but not limited to random access storage device (RAM), read only memory (ROM).
Electrically erasable ROM (EEPROM), flash memory or other memory technologies,
CD drive (CD-ROM), Digital Versatile Disc (DVD) or other optical storages set
Standby, cartridge, tape, disk memory or other magnetic memory devices, or can be used for
Other media any of storage information needed.
Communication media can be presented as the modulation number at such as carrier wave or other transmission mechanisms etc
Computer-readable instruction, data structure, program module or other data in the number of it is believed that, and
Including any information delivery media.Term " modulated data signal " expression has one or more
The signal of characteristic set or the signal being changed in the way of encoding information onto in the signal.Logical
Crossing example but non-limiting way, communication media includes such as cable network or directly line connection etc
Wire medium, and such as acoustics, radio frequency (RF), infrared and other wireless mediums etc
Wireless medium.The combination of any of the above-described content should also be as being included in computer-readable medium
In the range of.
As used herein, term " image " or " medical image " can be by interchangeably
Using, and refer to the image created by imaging system, imaging system includes but not limited to x-ray
Radiograph, X-ray computed tomography (CT) imaging, cone beam computed tomography image
(CBCT), NMR (Nuclear Magnetic Resonance)-imaging (MRI), positron emission fault (PET) imaging,
Single-photon emission computed tomography (SPET) imaging and ultrasonic (US) imaging.Doctor
Treating image can be 2D image or 3D rendering.
In the following embodiments, describe for automatically generating the radioactivity photograph for patient
The technology of phase imaging parameters.Embodiment includes for based on existing patient information and according to base
Model in knowledge generates the method for one or more radiographic imaging parameters.
Exemplary radiation therapy and imager
Referring now to Fig. 1, depict according to the exemplary radiation therapy of a disclosed embodiment
Diagram with imaging device 100.In one configuration, radiotherapy and imaging device 100 wrap
Include supporting mechanism (such as, frame 101), include treating the radioactive source of head 103 (such as,
Medical or clinical linear accelerator).In one embodiment, treatment head 103 be adapted with
Receiving (such as, from electron gun) main electron beam, it is inciding (typically by height
Z metal constitute) target material time generation is referred to as " bremsstrahlung photons
(bremsstrahlung photon) " material, and thus generate photon beams, final contrary treatment
Treatment source 105 is radiated.
In a further embodiment, multiple mechanical arms (such as, mechanical arm 107,108 and 109)
Frame can be attached to and be coupled to second (diagnosis) radioactive source 111, and region detection
Device plate 113 (being generally made up of the grid of single-point detector).According to some embodiments, additional
Arm can be attached to the transmission gate area detector for receiving the radiation from treatment source 105
Plate 118.In a further embodiment, equipment 100 can include patient's couch 115.Real
Executing the couch 115 in example is machinery couch, it is possible to mobile to change patient at couch
On position.Radiotherapy and imaging device 100 may further include and be communicatively coupled
Calculating equipment 117 is used for processing image and/or control and controlling equipment 100.Implement according to some
Example, the radiation radiated from treatment source 105 and receive transmission gate detector plates 118 can
To operate in the range of MV radiation (megavolt radiation), but dissipate from the second radioactive source 111
Cloth and the radiation that receives in area detector plate 113 can radiate at kV that (kilovolt is put
Penetrate) in the range of operate.
In one embodiment, the end of frame 101 on patient's couch 115 it is positioned
It is attached to for generating the treatment source 105 of (such as, for treatment or imaging purpose) radiation.
Patient is positioned (generally lying on the back) on patient's couch 115.By by beam of radiation (example
As, x-ray photon beam) it is transmitted through target volume and connects in area detector plate 113
Receive from the beam in source 111 or in detector plates 118, receive the beam from source 105 put
Penetrate target volume (be generally positioned at patient subjects in or around).
According to an embodiment, diagnostic source 111 or treating radiation source 105 can be used respectively to tie
Conjunction area detector 113 or area detector 118 obtain the image of target volume.Alternative
In embodiment, x-ray detector and radioactive source can be used for diagnosis and and radiographic
Field other application incoherent.In an embodiment, connect with for each radiographic image
The corresponding data of the radiant that receives are stored by calculating equipment 117.Implement at another
In example, the memorizer including calculating equipment 117 is substantially resistance to radiation, use substrate and/
Or logical method is known to those skilled in the art.
In other embodiments, system can not include radiotherapy equipment.But, system can
To include radioactive source and imager.Such as, in other embodiments, system can include that x penetrates
Line source and flat-panel detector.In a further embodiment, source and imager can be mounted or can
Not to be installed on rotary frame (such as, for the rotary frame of CBCT).Although this
Embodiment described in literary composition will include generation and the use of X-ray (photon) beam, but should
Working as understanding, alternative is very suitable for other particles and the generation of corresponding beam of particles and makes
With.These alternatives can include but not limited to, electronics and electron beam；Proton and matter
Sub-beam；And ion and ion beams.
According to embodiment of the disclosure, before next-door neighbour's therapeutic process, radiographic imaging parameters
The imaging being generated for the registration for patient (that is, location) and perform.According to determine
Optimization can be advised or imaging parameters is pre-selected.Can be by patient information classification to guide and putting
The selection of penetrating property photographing imaging parameter is for optimization.Such as, the patient about weight in patients believes
Breath, the material (such as metal) occurred, want optimised content (such as, for child's
The optimization of dosage, the cancer wherein induced is dangerous, in contrast to the image comparison for soft tissue
Degree (it requires bigger radiological dose)) all can be included into the factor that imaging parameters generates.
Can according to region interested (such as, if target area is bone structure, then can be only
(due to the higher contrast for bone structure, therefore required relatively low for location bone structure
Radiological dose) optimize the imaging being performed) and optimization to set up the registration of patient.Or,
If target area is soft tissue, the biggest radiological dose is necessary.
According to embodiment of the disclosure, some radiographic imaging parameters of equipment 100 is permissible
It is automatically calibrated (or alternatively, being proposed) to produce or to emphasize some of generated image
Quality.These parameters can include such as, changes intensity (such as, the source voltage of photon beams
And/or source electric current) or physical dimension (such as, angle or track), and/or area detector
113 or the position of area detector 118.Several picture gets parms and can include source and/or inspection
Survey device position, orientation and/or track, scanning track, sectors type select (such as, half
Sector or complete sector), and the position of couch 115.Extraly, radiation can be controlled
The beam pulse length in source.In an aspect, can automatically select (or alternatively, build
View) imaging and/or match pattern.Imaging parameters can include such as: to capture static volume or
The determination of the sequence of multiple volumes (such as, 4D-CBCT)；Numeral X-ray tomographic
Combination (DTS) sets；CBCT sets；Determination (such as, imaging and the trouble of strobe sets
The synchronization that person's anatomy moves)；And image reconstruction parameter (such as, image slice thickness),
As non-exhaustive list.
Image acquisition parameters can include such as: detector frame rate；Wave filter and Bao Yi
(bowtie) select；For the setting of collimator sheet, and/or multi-blade collimator (multi-leaf
Collimator, MLC) detector setting, such as, gain, details in a play not acted out on stage, but told through dialogues and pixel mixing (binning).
Spirit and scope to other Image Processing parameter well known by persons skilled in the art Yu the disclosure
Known.Additionally, according to embodiment of the disclosure, to external equipment (or multiple external equipment)
Control and the imaging device communication of one or more functions.Exemplary external devices function includes:
Gating；Succedaneum；Sport Administration equipment；And outside location equipment.Retouch the most further
State the mode automatically generated for these and other radiographic imaging parameters, especially
In the description of Fig. 2 to Fig. 5.
In an aspect, embodiment of the disclosure the employing whole trouble from therapeutic progresses in advance
Person's data, in order to position image capturing to optimize radiographic imaging parameters for patient.Put
Penetrating property photographing imaging parameter can include source dates (such as, source voltage) and image capture parameters
Both (such as, frame rate).Depend on patient's case essence and it may be desirable to result,
" optimize " optimization that can comprise one or more imaging parameters.
Referring now to Fig. 2, functional block diagram depicts the radiographic according to disclosure embodiment and becomes
As parameter generates the exemplary configuration of system 200.Radiographic imaging parameters 200 includes reality
Execute one or more Knowledge based engineering model 220 data processor 210, select module 225,
Optimize module 230.Radiographic imaging parameters generates system 200 can be further
Including input interface 235 and output interface 240.System 200 is wholly or partly carried out
For software program, hardware logic, or a combination thereof.
Knowledge based engineering model 220 can include specialist system and/or physical model.Specialist system
There is the knowledge of particular patient case, and depend on case, this system recommendations parameter preset.
Such as, specialist system may be embodied as the data base of different case, and for each case,
Unique parameter is designated.Each case in data base can include image pixel data, should
Image pixel data includes anatomic information, the profile of such as anatomical structure, bone diameter, current
Moisture, current fat content, the size of lung tissue, tumor's profiles etc..Normally,
Specialist system is present in subsystem level and is i.e. exclusively used in the metal of special metal existence (such as
Select to optimize the parameter of the imaging of metal), and for having the patient of metal implant,
The metal being exclusively used in corresponding metal implant material can be used.Similarly, exist for respectively
The soft tissue of type, expert for osseous tissue etc..The various combination of expert model can one
Rise and select the imaging parameters for current case.
In comparison, physical model processes about the knowledge of certain material present in imaging volume
(amount of bone that such as identifies in the image pixel data of case, the amount of metal, soft tissue
Amount).Based on the information about the material in imaging volume, one or more physical models are permissible
It is applied to determine radiograph imaging parameters (such as source voltage).
The combination using expert and physical model agreement is possible.In operation, existing trouble
Person's data 205 (patient data i.e. existed before being positioned to as session) (preferably via
Input interface 235) it is provided to radiographic imaging parameters generation system 200.Input is suffered from
Person's data 205 can comprise the combination in any of parameter, and this parameter can actually affect radioactivity
Photographing imaging and vector or other data structure can be organized as.Patient data 205 can
Including various information, such as: patient records (such as age, disease type)；Radiotherapy
Plan；Treatment plan CT data in advance；Body region (such as head, breast for treatment
Portion, pelvis)；Image purpose and/or application, name just a few.To known to those skilled in the art
The specific information of other patients consistent with the spirit and scope of the disclosure.Based on patient data
205, the one or more imaging class for radiographic image are determined.One or many
Individual imaging class can include the patient class's (such as pediatric patients, obese patient) wanting imaging,
And want the anatomic region (such as head, chest, pelvis) of imaging.Normally, imaging class
Can not be designated so that it is being optimally generating the radiograph imaging parameters for patient
Aspect is had any different.That is, pediatric patients should have the imaging protocol different from adult, and same
The image (it is likely to mobile at image device) of sample ground chest may require that with head image not
Same agreement.
The determination of imaging class (or multiple classification) makes it possible to select one or more radiation
Line photographing imaging parameter, to be optimized for image, is performed this selection by selecting module 225.
According to embodiment of the disclosure, select module 225 can automatically select one or more radiation
Line photographing imaging parameter.Select module 225 be additionally configured to identify and select one or more based on
The model of knowledge, based on patient data 205 and determined by imaging class, selected based on
The model of knowledge is for determining the imaging protocol being suitable to current case.Selected is one or more
Radiograph parameter is quilt according to selected Knowledge based engineering model (such as expert module)
Process, in order to generating the value for selected radiograph imaging parameters, it is output as (many
Individual) imaging parameters 215.
Selective emission line photographing imaging parameter and Knowledge based engineering model can be transparent to user, example
Such as treatment plan person or practitioner, in order to need not manually select.Alternatively, as described herein
(such as accompanying drawing 3 and Fig. 4), manually select for process some radiograph imaging
Parameter is consistent with the spirit and scope of the disclosure with Knowledge based engineering model.In certain embodiments,
This system can include user interface (such as input interface 235 and output interface 240), its
Allow user to carry out constriction one or more radiograph imaging by the constraint that user limits to join
Number, the patient data considered and the Knowledge based engineering model used.Alternatively, this system
Parameter can be limited so that user only can select (according to plan knowledge by determined by system)
Value in a certain scope.Alternatively, this system can be with proposed parameter (such as based on illustrating head
The planning data of scanning, this system can produce the radiograph corresponding with head protocols and become
As parameter).In an embodiment, this system 200 can " off-line " be implemented, and determines conjunction
Suitable imaging parameters can realize before patient treatment.
Arrive as recognized by those skilled in the art, the disclosure be not limited to determine imaging class and
/ or any mechanism of suitable Knowledge based engineering model based on patient data or criterion.This selection
Based on the similarity between patient data 205 and specialist system, and/or can be included in based on knowing
Physical model in the model 220 known.This selection the most only can be selected based on maximum comparability
Select an imaging class (or Knowledge based engineering model), according to selected similarity measurement
That of the highest similarity of having there is patient data 205.Alternatively, this selection is all right
Based on a certain acceptable similarity level, such as selected imaging class (or knowledge based
Model) number can be different, wherein there are all imaging class of sufficiently high similarity
(or Knowledge based engineering model) is chosen.Such as, bone coupling is often executed in advance
Patient in treatment is positioned to picture.Mating for bone, soft tissue contrast is not particular importance,
Therefore the Knowledge based engineering model being based only upon an expert model (or physical model) can be made
Selecting, this Knowledge based engineering model includes substantially reducing radiological dose only to obtain the figure of bone
The agreement of picture.
Single Knowledge based engineering model 220 can be derived from has some models to cover zones of different
Clinic, or can be developed by radiological installation supplier, or can come in some clinics
Share.This model can be from by facing the open source literature data of sick bed practitioner submission or facing sick bed number
According to acquisition.
Radiograph imaging parameters generates
With reference now to accompanying drawing 3, flow chart 300 is described for based on existing patient information next life
Become one or more radiographic imaging parameters of the radiographic image for patient
The embodiment of method.Method 300 may be embodied as system, such as the system 200 of diagram in Fig. 2.
Step 305-330 describes according to description in the flow chart 300 of various embodiments described herein
The illustrative steps of process.In an embodiment, flow chart 300 is implemented as being stored in computer
Computer executable instructions in computer-readable recording medium.
In step 305, receiving patient information (such as patient data 205) in system, this is
Under unified central planning be set to generate radiograph imaging parameters with by radiographic apparatus for patient
Carry out imaging.Patient data can include various information, such as: patient's record (the such as age,
Disease type)；Patient measurements (such as body weight, height, from optical system measuring
Body contour)；Radiotherapy treatment planning；Treatment plan CT data in advance；Body for treatment
Body region (such as head, chest, pelvis)；Image purpose and/or application, name just a few.
Spirit and scope to other patient specific informations well known by persons skilled in the art Yu the disclosure
Consistent.
Upon receipt of patient data, determine that the patient information received belongs to the most in the step 310
In one or more imaging class.As described herein, imaging class can include being become
The type (such as, pediatric patients, obese patient) of the patient of picture, and solution to be imaged
Cut open region (such as head, chest, pelvis).Normally, imaging class can be designated and make
Obtain it to have any different in terms of the radiograph imaging parameters of patient in optimum generation.That is, youngster
Section patient should have and the different imaging protocol of adult, and image (its of similarly chest
It is likely to mobile at image device) may require that the agreement different from head image.
Make Knowledge based engineering model (such as Knowledge based engineering model 220) in step 315
Selection, this selection based on determine in step 310 based on imaging class.As described herein,
Knowledge based engineering model can include specialist system and/or physical model.Knowledge based engineering (multiple)
Model can be chosen automatically, and could be for the expert model example of particular subsystem
If radiograph imaging parameters optimization is for the soft tissue of imaging, or for osseous tissue etc..
Alternatively or additionally, KBS Knowledge Based System, based on physical model, is wherein becoming about material
Knowledge is there is in volume (amount of such as bone, the amount of metal, the amount etc. of soft tissue).Multiple
Expert model and physical model can be chosen, and the combination of expert and physical model also with this
Disclosed spirit and scope are consistent.According to embodiment of the disclosure, select Knowledge based engineering mould
Type can be automatic, or alternatively the user of this system can perform to manually select (such as
Via input interface 235).
In step 320, select one or more radiographic imaging parameters, wherein (multiple)
Imaging class determined by the use of radiographic imaging parameters selects.There is some questions meeting shadow
Ring the image quality and imaging parameters used.These include the structure of surrounding target image volume
(such as bone, the high-load of soft tissue, such as pelvis area).Additionally, the expection of experimenter
Motion (due to such as breathe) picture quality and collection, and acquisition mode can be affected.Right
In some target area, select imaging parameters with extension sweep radius such as head,
The image mode (the most entirely fanning pattern) with small radii can be used, and for pelvis,
Expect the bigger visual field (the most partly fanning pattern).
According to embodiment of the disclosure, selective emission line photographing imaging parameter includes that user is mutual
(such as via input interface 235) so that user is specifically worth and can be used generation imaging
Parameter.Such as, user can formulate for the particular value of one or more imaging parameters or value
Scope, other imaging parameters are generated while considering (multiple) parameter value that user specifies.
In step 325, selected radiograph imaging parameters according to one or more based on
The model of knowledge and be processed for (multiple) radiograph that optimization step 320 selects
Imaging parameters.Knowledge based engineering model is used for determining for one or more radiographic imagings
The value of parameter, especially from the radiographic imaging parameters of step 320.Such as, for
The image of chest, it is assumed that having the motion of chest, the most therefore specialist system can determine whether to include using
4D-CBCT (it considers respiratory movement) and/or the radiographic imaging of gating (gating)
Parameter.That is, in order to make the minimised of patient moving, process is suffered from by Knowledge based engineering model
Person's data are to generate the shortest imaging protocol.On the contrary, Knowledge based engineering model may indicate that
Use gating, gather image, as long as such as patient is at maximum sucting stage.If image is to suffer from
Person's head, the most different agreements can be selected by Knowledge based engineering model/be advised.
In the case of physical model, affected radiographic imaging parameters can be imaging
Device frame rate, wave filter/Bao Yi (bowie) selection, source current/voltage etc..Implement at some
In example, specialist system can determine the parameter (such as gating, 4D-CBCT etc.) of some classification,
And physical model affects frame rate etc., as mentioned above.The combination of specialist system and physical model can
For determining a set of parameter being generated.
In step 330, output is generated for selected radiographic imaging parameters
Value.In an embodiment, for each radiographic imaging parameters is generated in step 315
Individual value.In an embodiment, generate the scope of the value for each radiographic imaging parameters,
Or generate the scope of the value selecting number for multiple radiographic imaging parameters.According to
Embodiment of the disclosure, value (or scope of value) can be the value of suggestion, or they are permissible
It is automatically applied to imaging system (such as radiographic apparatus and imaging system).According to enforcement
Example, value can be the value got rid of.
With reference now to accompanying drawing 4, flow chart 400 is described to generate the radiograph figure for patient
The embodiment of the method for one or more radiographic imaging parameters of picture, including selecting alternatively
Select the subset of existing patient information by the Knowledge based engineering models treated selected.Process 400
Including the optional user selection to some imaging parameters value, other program parameters refer to about user
Fixed value and be generated.Step 405-455 describes and includes according to various embodiments described herein
Flow chart 400 in the illustrative steps of process described.In one embodiment, flow chart
400 are stored in computer-readable medium.
In step 405, receive existing patient data.Patient data can include various letter
Breath, such as: patient records (such as age, disease type)；Patient measurements is (such as
Body weight, height, body contour according to optical system measuring)；Radiotherapy treatment planning；In advance
Treatment plan CT data；Body region (such as head, chest, pelvis) for treatment；
Image purpose and/or application, name just a few.Special to other patients well known by persons skilled in the art
Determine information consistent with the spirit and scope of the disclosure.
In step 410, it is determined whether the patient data only consideration received in step 405
Subset.If it is not, then process proceeds to what step 420 and considering received in step 405
All patient datas.If it is, process proceeds to step 415, wherein select by process 400
The subset of the patient data considered.This selection can be by the operator of the system performing process 400
Such as make via input interface 235.It is alternatively possible to this selection predetermined, and
The subset being pre-selected of patient data can be provided.Such as, patient data is one or more
Classification can be identified for subset and select (such as patient's record and radiotherapy treatment planning), and
Other can be identified as to ignore (such as image purpose and patient are measured).By this way,
The relative importance of the different aspect (such as classification) of patient data can be by practitioner or reality
Execute any user instruction of the system of process 400.
Once it is determined that for the patient data considered, just determine one or more one-tenth in step 425
As classification.As described herein, imaging class can include the type (example of patient to be imaged
As, pediatric patients, obese patient), and anatomic region to be imaged (such as head,
Chest, pelvis).Normally, imaging class can be designated so that it is for patient
The radiograph imaging parameters aspect of good generation is had any different.
In step 430, it is determined whether manually select Knowledge based engineering model (or multiple mould
Type).If it is not, then process proceeds to step 440, wherein occur to one or more based on
Automatically selecting of the model of knowledge.If it is, process continues in step 435, wherein select
Specific Knowledge based engineering model (or multiple model), it will be used for processing from step
415 or the patient data of step 420.Such as, Knowledge based engineering model could be for specific
The expert model of subsystem such as optimizes the radiation for imaging soft tissue or osseous tissue etc.
Property photographing imaging parameter.Alternatively or additionally, KBS Knowledge Based System is based on physical model,
Wherein about material in imaging volume (amount of such as bone, the amount of metal, the amount etc. of soft tissue)
Present in knowledge.Multiple expert models and physical model can be chosen, and expert and thing
The combination of reason model is also consistent with the spirit and scope of the disclosure.In an embodiment, selection can
Such as to be made via input interface 235 by the operator of the system of execution process 400.Standby
Selection of land, select can based on such as about particular historical practitioner knowledge and location image quilt
The disease of the patient that planning is used for predefines.
Optional step 445 includes one or more imaging parameters (such as via input interface 235)
User select so that the value that user specifies can be used.In one aspect, given imaging
Its of the imaging parameters that the value that the user of parameter specifies makes process 400 generate about user to specify
His imaging parameters (in step 455).As non-restrictive example, full fan image capture mode
Instruction manual (due to the scanning of such as cervical region) can make process 400 generate around entirely fanning constraint
Other imaging parameters, cause the source specified/detector orientation and scanning track.
Follow selection specific Knowledge based engineering (multiple) model, in step 450, patient's number
It is processed according to according to selected Knowledge based engineering (multiple) model.In step 455, one
Individual or multiple radiographic imaging parameters are generated.The various combination of specialist system can be common
Select the radiographic imaging parameters for patient.According to embodiment of the disclosure, from step
455 imaging parameters generated are the suggestions (such as via output interface 240) presenting to user.
(multiple) imaging parameters of suggestion can be confirmed by the user, or alternatively, proposed imaging
Parameter can change to, from the value of suggestion, the value that user specifies.(multiple) imaging parameters of suggestion
The value (such as in the source of 30 degree of orientations) specified, or the scope (example for value can be rendered as
Source electric current as at 60-80mA).
Embodiment of the disclosure and can be understood by using exemplary imaging case.An example
In, for youngster (such as pediatric cases), be suitable to optimize radiographic imaging parameters and make
The radiological dose that must reduce is delivered.The imaging parameters being suitable to select in this case is relatively low source
Voltage and the setting of relatively low source electric current.Additionally, shorter beam pulse length can be automatic
Be chosen (or being proposed in certain embodiments).If higher soft tissue contrast quilt
(such as by practitioner) indicates, then the optimization of these radiographic imaging parameters can include
The increase of these parameter values one or more.
In one example, for obese patient, can make image parameter select and optimize with
Image is avoided to block.Block the target imaging volume appeared in less than 100% to be successfully imaged
In the case of.From the patient data 205 of the plan CT including patient, it is known that patient
Body weight, body contour etc..Patient data 205 is included in the body weight of statement in patient's record, with
And the information about the body part that will be imaged.These may be used for estimating to be divided into body
The required dosage of picture.It is likely to such as include Mobile sickbed (such as by selection and optimization
Sick bed 115) parameter avoid the stage.Alternatively or additionally, detector (such as detects
Device 113 and/or detector 118) can be moved for changing imaging volume.The detection reduced
Device moves to cause and gathers image more quickly, because the volume of imaging can be reduced.
On the contrary, moving detector allows more volume imaging, cost is to expend the more time.Attached
Adding ground, the sick bed 115 to then machinery sick bed, patient can be moved around to be placed on
Optimal location.Therefore the volume of imaging can be changed via imaging parameters, this imaging parameters bag
Include that detector moves, sick bed moves and detector moves the combination moved with sick bed.
Another exemplary case relates to indicating the treatment plan of sectional therapy (such as according to patient's number
According to 205).Often, treatment is segmented into some segmentations.Such as, full therapeutic scheme can be by
Resolving into 30 segmentations so that for the dosage of whole 30 units, every segmentation has one (1)
Dosage unit.Each segmentation can perform therefore for 30 segmentations in given sky,
Treatment can complete in 30 days.For the treatment plan of segmentation, required by dose delivery
Accuracy depends on the degree on division number.For the segmentation (highly segmentation) of big number,
Owing to can there is the generation that more radiation delivers, each single radiation delivery is reduced, and accompanies
Accuracy for delivering can be relaxed with the need.If on the contrary, using little segmentation, then
Each segmentation has a larger dose, and need in the dose delivery of target area adjoint more
Big accuracy.This means that therapeutic imaging is affected the most in advance: when using more
During few segmentation, more time and/or larger dose can be used for placing image, and when using
During more segmentation, less time and/or lower dosage can be used for placing image.According to enforcement
Example, the parameter being input to system 200 includes it can being those tolerances for imaging dosage.
The function of the system and method for the disclosure is to provide and prevents image error, such as due to operation
The image exposure of person's mistake is excessive.If operator is applied with too many dosage (such as works as largest body
Long-pending when not occurring, it is applied with the dosage for maximum volume), then image can be exposed excessively.
Knowledge from the volume being imaged of patient data 205 makes it possible to the spy for this image
Determine to guide on dosage range.Can put on the dosage applied according to embodiment of the disclosure
Put restriction over-exposed/under-exposed to avoid.
Exemplary computer device
As Fig. 5 presents, the example system bag that disclosure embodiment can be implemented thereon
Include general purpose computing system environment, such as calculate system 500.In its most basic configuration,
Calculating system 500 generally includes at least one processing unit 501 and memorizer, and is used for passing
Reach the address/data bus 509 (or other interfaces) of message.Depend on computing system environment
Accurately configuration and type, memorizer can be volatibility (such as RAM502), non-volatile
(such as ROM503, flash memory etc.) or the some combination of the two of property.Real at some
Executing in example, memorizer is the most radiation-resistant, uses substrate well known by persons skilled in the art
And/or logical method.
Calculating system 500 can also include that optional graphics subsystem 505 is for presenting by information in
To computer user, such as by the display device in the attachment connected by video cables 511
Information is shown on 510.According to embodiment of the disclosure, graphics subsystem 505 can be by regarding
Frequently cable 511 is directly coupled to display device 510.For controlling in computer system 500
The graphical user interface of the application of the medical linear accelerator performed can be such as at figure subsystem
System 505 generates, and is displayed to user in display device 510.In an alternative embodiment,
Display device 510 is desirably integrated into calculating system (such as kneetop computer or net book display surface
Plate) in and do not require video cables 511.
Additionally, calculating system 500 can also have additional feature/function.Such as, calculate
The storage device (removable and/or non-removable) that system 500 can also include adding include but
It is not limited to, disk or CD or tape.Such additional memorizer is set by data storage
It is illustrated in Figure 5 for 507.Computer-storage media includes being implemented in for storing all
Any side such as the information of computer-readable instruction, data structure, program module or other data
Volatibility in method or technology and non-volatile, the removable and medium of non-removable.
RAM 502, ROM 503 and data storage devices 507 are all computer-storage media
Example.
In an embodiment, computer system 500 includes for performing each side according to the disclosure
The treatment of process, wherein instruction can be stored in RAM 502, ROM 503 and/or data
On memory devices 504.Such as, computer system 500 can include radiographic imaging
Parameter generates instruction 513, wherein according to embodiment of the disclosure, and radiographic imaging parameters
Generate instruction 513 to comprise so that computer system 500 performs to generate for from existing patient's letter
Breath automatically generates process (the such as process of the value of one or more radiographic imaging parameters
300,400) instruction.
Computer system 500 also includes optional alphanumeric input equipment 506, optionally
Mouse control or guiding equipment 507, and one or more signal communication interface (input/output
Equipment, such as NIC) 509.Optional alphanumeric input equipment 506 is permissible
Message or command selection is passed on to central processing unit 501.Optional mouse control or the equipment of guiding
507 are coupled to for passing on input message or the bus of command selection to central processing unit 501
509.Signal communication interface (input-output apparatus) 509 being also coupled to bus 509 is permissible
It it is serial port.Communication interface 509 can also include wireless communication mechanism.Use communication interface
509, computer system 500 can be via communication network (such as the Internet or Intranet (example
Such as LAN)) it is communicably coupled to other computer systems, or data (example can be received
Such as digital television signal).
Although so that architectural feature and/or the specific language of method action are described this theme,
It will be appreciated that the theme limited in the following claims is not necessarily limited to specific spy
Levy or features described above.On the contrary, special characteristic and actions described above are described as reality
Execute the exemplary forms of claim.
Claims (15)
1. generate a computer implemented method for radiograph imaging parameters, described method
Including:
Receive the patient information relevant with the radiographic image for patient；
Imaging class is determined based on the patient information received；
Imaging class determined by use selects at least one Knowledge based engineering model；
Imaging class determined by use becomes from multiple radiographs of radiographic apparatus
As parameter selects at least one radiograph imaging parameters；
The patient information received according to described Knowledge based engineering models treated is for being optimized to
A few selected radiograph parameter；And
Export the value of at least one selected radiograph imaging parameters.
Computer implemented method the most according to claim 1, wherein said patient information
Based at least one in the following: treatment plan imaging session data；Patient health record；
Radiotherapy treatment planning；Treatment plan computed tomography image parameter in advance；The body region of described patient
Territory.
Computer implemented method the most according to claim 1, wherein said knowledge based
Model include at least one in specialist system and physical model.
Computer implemented method the most according to claim 1, wherein said multiple radiation
Line photographing imaging parameter includes: radiographic apparatus imaging pattern；Image capture parameters；Several
What image acquisition parameter；The body region of described patient；Radiographic apparatus source voltage and putting
At least one in the electric current of radiographic apparatus source；At the equipment outside radiographic apparatus
Control operation.
Computer implemented method the most according to claim 1, wherein said output valve bag
Include the recommended value for selected radiograph imaging parameters.
6. embody a non-volatile computer readable storage medium storing program for executing for instruction, described instruction by
When processing equipment performs so that described processing equipment execution following methods:
Receive the patient information relevant with the radiographic image for patient；
Imaging class is determined based on the patient information received；
Imaging class determined by use selects at least one Knowledge based engineering model；
Imaging class determined by use becomes from multiple radiographs of radiographic apparatus
As parameter selects at least one radiograph imaging parameters；
The patient information received according to described Knowledge based engineering models treated is for optimizing institute
State at least one selected radiograph parameter；And
Export the value of at least one selected radiograph imaging parameters.
Non-volatile computer readable storage medium storing program for executing the most according to claim 6, Qi Zhongsuo
State patient information based at least one in the following: treatment plan imaging session data；Suffer from
Person's health records；Radiotherapy treatment planning；Treatment plan computed tomography image parameter in advance；Institute
State the body region of patient.
Non-volatile computer readable storage medium storing program for executing the most according to claim 6, Qi Zhongsuo
State multiple radiograph imaging parameters to include: radiographic apparatus imaging pattern；Image is caught
Obtain parameter；The geometric orientation of image capturing；The body region of described patient；Radiograph sets
At least one in standby source voltage and radiographic apparatus source electric current；At radiographic apparatus
The control operation of outside equipment.
Non-volatile computer readable storage medium storing program for executing the most according to claim 8, Qi Zhongsuo
State output valve to include being restricted at least one selected radiograph imaging parameters described
The scope of value.
Non-volatile computer readable storage medium storing program for executing the most according to claim 6, wherein
Described Knowledge based engineering model includes multiple Knowledge based engineering model, and the plurality of based on knowing
Described Knowledge based engineering model in the model known is automatically selected and receives for processing
Patient information.
11. 1 kinds of radiotherapy equipments, including:
Multiple radioactive sources；
Multiple imagers, for receiving radiation from the plurality of radioactive source, and are configured to make a living
Become to represent the data of the target image including multiple anatomical structure；And
Calculating equipment, is configured to access the trouble relevant with the radiographic image for patient
Person's information, described calculating equipment is configured to determine imaging class based on described patient information,
And imaging class determined by based on selects Knowledge based engineering model, and from described radiation
Multiple radiograph imaging parameters of therapeutic equipment select at least one radiograph to become
As parameter, described radiograph imaging parameters selects based on described imaging class, wherein said
Calculating equipment is configured to process received patient's letter according to described Knowledge based engineering model
Cease for optimizing and generating at least one selected radiograph imaging parameters described
Value.
12. radiotherapy equipments according to claim 11, wherein said patient information base
At least one in the following: treatment plan imaging session data；Patient health record；
Radiotherapy treatment planning；Treatment plan computed tomography image parameter in advance；The body region of described patient
Territory.
13. radiotherapy equipments according to claim 11, wherein said Knowledge based engineering
Model includes at least one in the following: specialist system, and physical model.
14. radiotherapy equipments according to claim 11, wherein said multiple imagings are joined
Number include in the following at least one: the source voltage of the plurality of radioactive source and described
The source electric current of multiple radioactive sources.
15. radiotherapy equipments according to claim 11, wherein said multiple imagings are joined
Number includes the image capture parameters of the plurality of imager.
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| CN110709011B (en) * | 2017-05-02 | 2024-02-09 | 皇家飞利浦有限公司 | X-ray system for guided operation |
| CN109979570A (en) * | 2019-03-20 | 2019-07-05 | 何佳航 | First aid hand-held diagnostic device and diagnostic method with X-ray check function |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3054390A1 (en) | 2016-08-10 |
| CN105832356B (en) | 2021-08-10 |
| US20160220844A1 (en) | 2016-08-04 |
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